0.3.0

The proofread skill deferred to a standalone skill that no longer exists, so it now
states its own rules and adds the ones from Williams's Style: Lessons in Clarity
and Grace. The sentence-level ones — a subject that is not the character, an
opener, an interruption, a tail — are a fourth category, clarity, drawn in blue,
because they are not words to cut. A show map saved by an earlier version no
longer hides a kind it never knew about.